Backlight module and liquid crystal displayTechnical field
The present invention relates to Display Technique field, be specifically related to a kind of backlight module and liquid crystal display.
Background technology
Along with the development of Display Technique, a lot of product needed show image on the tow sides of display screen,The electronic products such as Dual-band Handy Phone, double screen billboard come into vogue.And shuangping san product in the market,Still it is made up of common Display Technique, in the regular display that internally installed positive and negative two sets are complete.Fig. 1It it is the exploded view of the common themselves one-sided displays of prior art.As it is shown in figure 1, common themselves one-sided displays includes:Ferrum backboard 110, reflector plate 120, light guide plate 130, blooming piece 140, plastic frame 150, buffering adhesive 160,LCDs 170 and LED lamp bar 180, wherein blooming piece 140 includes brightening piece 141 and diffusion sheet142。
The one side display device that two are identical is oppositely arranged by existing double-side display device, two light guide plates itBetween it is generally required to two reflector plates so that the integral thickness of double-side display device is bigger, relatively costly；AndThe heat that LED lamp bar sends can not uniformly spread so that two light guide plates uneven produce buckling deformation because being heated,And then cause picture abnormal.
Summary of the invention
In view of this, the embodiment of the present invention provides a kind of backlight module and liquid crystal display, existing to optimizeDouble-sided display technology, solves that double-side display device thickness in prior art is bigger, relatively costly and light guide plateBecause of uneven generation buckling deformation of being heated, and then the problem causing picture exception.
On the one hand, embodiments provide a kind of backlight module, including:
Luminous component；
Front light guide plate, is converted into area source for the light source sent by luminous component, and leads from the first exiting surfaceGo out；
Rear light guide plate, is oppositely arranged with above-mentioned front light guide plate, is converted into for the light source sent by luminous componentArea source, and derive from the second exiting surface；
Double-sided reflecting glue, is arranged between front light guide plate and rear light guide plate, and this double-sided reflecting glue is by front light guide plateIt is bonded as one with rear light guide plate；
First optical diaphragm group, is positioned at the front side of the first exiting surface of above-mentioned front light guide plate；And second opticsDiaphragm group, is positioned at the front side of the second exiting surface of above-mentioned rear light guide plate.
Exemplarily, above-mentioned backlight module also includes:
Double-sided reflecting glue, is arranged between front light guide plate and rear light guide plate, and this double-sided reflecting glue is by front light guide plateIt is bonded as one with rear light guide plate.
Exemplarily, luminous component includes the first luminous component being arranged at least side of front light guide plate, withAnd it is arranged on the second luminous component of at least side of rear light guide plate.
Exemplarily, front light guide plate and rear light guide plate share same luminous component.
Exemplarily, luminous component includes LED lamp bar, and this LED lamp bar is made up of LED particle array.
Exemplarily, the first optical diaphragm group includes: the first brightening piece and the first diffusion sheet；And second lightLearn diaphragm group and include the second brightening piece and the second diffusion sheet.
On the other hand, embodiments provide a kind of liquid crystal display, including the first display floater, theTwo display floaters, front glue frame and rear glue frame, and above-mentioned backlight module, front glue frame and rear glue frame show firstShow that panel, backlight module and the second display floater are packaged as a whole.
Exemplarily, above-mentioned liquid crystal display, also include:
First buffering adhesive, is arranged between front glue frame and the first display floater；
Second buffering adhesive, is arranged between rear glue frame and the second display floater.
The backlight module of embodiment of the present invention offer and liquid crystal display, use double-sided reflecting glue by front light guide plateBeing bonded as one with rear light guide plate, this double-sided reflecting glue absorbs as reflection part and spreads to be sent out from luminous componentThe light of injection, can effectively reduce the integral thickness of backlight module, reduce cost, and double-sided reflectingGlue absorbs the heat that sends of luminous component and makes it spread rapidly so that front light guide plate and rear light guide plate entirety are subject toHeat is uniformly, it is to avoid in the backlight module of common framework, front light guide plate and rear light guide plate be because of uneven generation of being heatedBuckling deformation, and then cause the situation of picture exception.
Accompanying drawing explanation
Fig. 1 is the exploded view of the common themselves one-sided displays of prior art；
The exploded view of a kind of backlight module that Fig. 2 provides for the embodiment of the present invention one；
The exploded view of a kind of backlight module that Fig. 3 provides for the embodiment of the present invention two；
The exploded view of a kind of backlight module that Fig. 4 provides for the embodiment of the present invention three；
The part sectioned view of a kind of backlight module that Fig. 5 provides for the embodiment of the present invention three；
The exploded view of a kind of liquid crystal display that Fig. 6 provides for the embodiment of the present invention four；
The profile of a kind of liquid crystal display that Fig. 7 provides for the embodiment of the present invention four.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the accompanying drawings to the present inventionSpecific embodiment is described in further detail.It is understood that specific embodiment described herein is onlyIt is only used for explaining the present invention, rather than limitation of the invention.It also should be noted that, for the ease of retouchingState, accompanying drawing illustrate only part related to the present invention rather than full content.
Embodiment one
The exploded view of a kind of backlight module that Fig. 2 provides for the embodiment of the present invention one.Backlight in the present embodimentModule can apply to liquid crystal display, for the well-off brightness of liquid crystal display and the light being evenly distributedSource so that it is can normal show image；The light of mobile phone, panel computer and notebook computer etc. can also be regardedSource.
The backlight module that the present embodiment provides, including:
Luminous component 210；
Front light guide plate 220, for the light source that luminous component 210 sends is converted into area source, and goes out from firstBright finish is derived；
Rear light guide plate 230, is oppositely arranged with front light guide plate 220, for the light source sent by luminous component 210It is converted into area source, and derives from the second exiting surface；
Double-sided reflecting glue 240, is arranged between front light guide plate 220 and rear light guide plate 230, this double-sided reflecting glueFront light guide plate 220 and rear light guide plate 230 are bonded as one by 240；
First optical diaphragm group 250, is positioned at the front side of the first exiting surface of front light guide plate 220；And second lightLearn diaphragm group 260, be positioned at the front side of the second exiting surface of rear light guide plate 230.
Front light guide plate 220 and rear light guide plate 230 are the acryl/PC sheet material utilizing optical grade, then with havingThe hitech materials of high reflectance and not extinction, prints with UV half tone in the acryl sheet material bottom surface of optical gradeBrush technology stamps light guiding points.Optical grade acryl sheet material is utilized to draw the light issued from lamp in optical grade pressure gramThe stop of power plate surface, when light is mapped to each light guiding points, reflection light can spread toward all angles, soRear destruction conditioned reflex is penetrated by the first exiting surface of front light guide plate 220 and the second exiting surface of rear light guide plate 230Go out.By various densitys, light guiding points not of uniform size, front light guide plate 220 and rear light guide plate 230 can be made equalEven luminescence.
The first blooming piece on front side of front light guide plate 220 and the second blooming piece on front side of rear light guide plate typically riseTo uniform light, and converge wide-angle light for effects such as front observations.
Double-sided reflecting glue 240 can absorb and spread the light launched from luminous component 210, plays reflectionThe effect of sheet.Double-sided reflecting glue 240 can also absorb the heat that luminous component 210 sends, and makes heat fastSpeed is diffused into whole double-sided reflecting glue so that front light guide plate 220 and rear light guide plate 230 entirety are heated evenly.
The backlight module that the embodiment of the present invention one provides, relative to prior art, uses double-sided reflecting glue conductReflection part, this double-sided reflecting glue absorbs and spreads the light launched from luminous component, plays reflector plateEffect, thus reduce the thickness of backlight module, save cost；Double-sided reflecting glue can also absorb luminescenceHeat that parts send also makes it spread rapidly so that front light guide plate and rear light guide plate entirety are heated evenly, and keep awayHaving exempted from the backlight module of common framework, front light guide plate and rear light guide plate uneven produce buckling deformation because being heated,And then cause the situation of picture exception.
Embodiment two
The exploded view of a kind of backlight module that Fig. 3 provides for the embodiment of the present invention two.The present embodiment is in above-mentioned realityBeing optimized on the basis of executing example, in the backlight module that the present embodiment provides, the first optical diaphragm group 360 includes:First brightening piece 361 and the first diffusion sheet 362；And second optical diaphragm group 370 include the second brightening piece371 and second diffusion sheet 372.
Front light guide plate 330 and rear light guide plate 340 can be gone out by the first brightening piece 361 and the second brightening piece 371The light that bright finish sends is assembled to single direction, and unemployed light outside visual angle, imitate according to the reflection again of lightShould be recycled, and assemble with optimal angle.In the present embodiment, it is preferable that the first brightening piece 361It is rasterizing with the diaphragm internal structure of the second brightening piece 371, the light of random direction can be made, through gridLattice become single direction light, considerably increase the front face brightness of backlight module.
First diffusion sheet 362 and the second diffusion sheet 372 are generally constituted diffusion layer by scattering particles, when there being lightCan constantly pass in the medium that two refractive indexs are different through diffusion layer, light can occur many simultaneouslyRefraction, the phenomenon reflecting and scattering, the most just cause the effect of optics diffusion.First diffusion sheet 362 HeThe major function of the second diffusion sheet 372 is to provide a uniform area source.In the present embodiment, the first diffusionSheet 362 and the second diffusion sheet 372 will be specifically for penetrating via the first brightening piece 361 and the second brightening piece 371The light atomization gone out, increases uniform light degree further.
Exemplarily, luminous component includes the first luminous component being arranged at least side of front light guide plate 330310, and it is arranged on the second luminous component 320 of at least side of rear light guide plate 340.
Exemplarily, luminous component includes LED lamp bar, and this LED lamp bar is made up of LED particle array.
LED-backlit is divided by incoming position can be divided into straight-down negative and the big class of side entering type two.Straight-down negative is sending outIt has been distributed in the behind of light guide plate so that backlight can uniformly be communicated on whole screen light parts uniformity,Picture detail is the finest and the smoothest true to nature.Side entering type is at least one side luminous component being arranged on light guide plate,Allow backlight module luminescence time, the light transmission light guide plate launched from screen edge is transported to the region of center Screen.
Side entering type and straight-down negative two ways are respectively arranged with quality, and side entering type emphasizes that ultra-thin energy-saving is leading, and straight-down negative is strongAdjusting image quality performance excellence, in general, both overall difference is little, can select to adopt in the present embodimentWith side entering type or straight-down negative.
The present embodiment illustrates as a example by side entering type, and the backlight module that the present embodiment provides is at front light guide plate 330At least side the first luminous component 310 is set, and arrange second at least side of rear light guide plate 340Light parts 320.The light source that first luminous component 310 sends is converted into area source by front light guide plate 330, and fromFirst exiting surface is derived, and is then passed through the random direction that front light guide plate 330 penetrates by the first brightening piece 361Light becomes the light front face brightness with increase backlight module of single direction, will finally by the first diffusion sheet 371The light atomization of the first brightening piece 361 injection, increases uniform light degree further；Rear light guide plate 340 is byThe light source that two luminous components 320 send is converted into area source, and derives from the second exiting surface, is then passed through theThe light of the random direction that rear light guide plate 340 is penetrated by two brightening pieces 362 becomes the light of single direction to increase the back of the bodyThe front face brightness of light module, the light mist the second brightening piece 362 penetrated finally by the second diffusion sheet 372Change, increase uniform light degree further.
In the backlight module that the embodiment of the present invention two provides, at least side of front light guide plate and rear light guide platePosition is respectively provided with the first luminous component and the second luminous component, and the light that the first luminous component sends is the most guide-lightingFirst exiting surface of plate penetrates, and the light that the second luminous component sends is penetrated from the second exiting surface of rear light guide plateGoing out, the luminous reflectance that front bottom surface of light guide plate spills is returned front light guide plate the first of the past light guide plate by double-sided reflecting glueExiting surface penetrates, and the luminous reflectance that rear bottom surface of light guide plate spills is returned rear light guide plate and from rear by double-sided reflecting glueSecond exiting surface injection of light guide plate, processes and at the diffusion of diffusion sheet respectively through adding lustre to of brightening piece afterwardsReason, finally obtains high brightness and the area source being evenly distributed.
Embodiment three
The exploded view of a kind of backlight module that Fig. 4 provides for the embodiment of the present invention three.The present embodiment is in above-mentioned realityIt is optimized on the basis of executing example, the front light guide plate 420 of the backlight module that the present embodiment provides and rear light guide plate430 share same luminous component 410.
Preferably, this luminous component 410 can be arranged on above-mentioned front light guide plate 420 and rear light guide plate 430 itBetween double-sided reflecting glue 440 at least side pockets in.
Double-sided reflecting glue 440 is specifically for bonding front light guide plate 420 and rear light guide plate 430, front light guide plate 420After rear light guide plate 430 and double-sided reflecting glue 440 paste composition, leave receiving in the position of at least side recessedGroove, is used for attaching luminous component 410.Particularly as follows: between front light guide plate 420 and rear light guide plate 430 at least oneNot pasting double-sided reflecting glue 440 on the position of side, this position is pockets, and luminous component 410 attachesIn this pockets, and front light guide plate 420 scattering surface relative with rear light guide plate 430 is recessed in this receivingWithout light guiding points at groove, using the incidence surface as luminous component 410.
The light source that luminous component 410 sends is converted into area source by front light guide plate 420, and from the first exiting surfaceDeriving, the light being then passed through the random direction that front light guide plate 420 is penetrated by the first brightening piece 451 becomes singleThe light in direction is to increase the front face brightness of backlight module, finally by the first diffusion sheet 461 by the first brightening pieceThe light atomization of 451 injections, increases uniform light degree further；Rear light guide plate 430 is by luminous component 410The light source gone out is converted into area source, and derives from the second exiting surface, after being then passed through the second brightening piece 452 generalThe light of the random direction of light guide plate 430 injection becomes the light front face brightness with increase backlight module of single direction,The light atomization penetrated by second brightening piece 452 finally by the second diffusion sheet 462, increases light furtherThe uniformity.
The part sectioned view of a kind of backlight module that Fig. 5 provides for the embodiment of the present invention three.Front light guide plate 520After rear light guide plate 530 and double-sided reflecting glue 540 paste composition, leave pockets in bottom, LEDGrain 511 is attached in this pockets, and LED substrate 512 is used for supporting LED particle 511.
LED particle 511 is attached in pockets, and its advantage is: the light that LED particle 511 sends is completeIt is retained between front light guide plate 520 and rear light guide plate 530, avoids light loss most possibly, significantly carryHigh luminous efficiency；It is additionally, since the light that LED particle 511 sends and is fully retained in front light guide plate 520 HeBetween rear light guide plate 530, therefore avoiding the generation of lamp shadow, its optical effect is better than the backlight of common frameworkModule.
Embodiment four
The exploded view of a kind of liquid crystal display that Fig. 6 provides for the embodiment of the present invention four.As shown in Figure 6, originallyThe liquid crystal display that embodiment provides includes: first display floater the 611, second display floater 612, front glue frame607 and rear glue frame 608, and any of the above-described described backlight module.Wherein, backlight module includes: luminousParts 601, front light guide plate 602, rear light guide plate 603, double-sided reflecting glue the 604, first optical diaphragm group 605With the second optical diaphragm group 606.Front glue frame 607 and rear glue frame 608 are by the first display floater 611, backlight mouldGroup and the second display floater 612 are packaged as a whole.
Exemplarily, above-mentioned liquid crystal display also includes:
First buffering adhesive 609, is arranged between front glue frame 607 and the first display floater 611；
Second buffering adhesive 610, is arranged between rear glue frame 608 and the second display floater 612.
First buffering adhesive 609 and the second buffering adhesive 610 are respectively used to paste and fix the first display floater 611With the second display floater 612 on backlight module, also function to the effect of buffering, to avoid because being shaken simultaneouslyWhen moving or impact, damage the first display floater 611 and the second display floater 612.
The surrounding of front glue frame 607 is distributed groove, protruding corresponding with what rear glue frame 608 surrounding was distributed, front glueFirst display floater 611, backlight module and second are shown by the way of snapping by frame 607 and rear glue frame 608Panel 612 is packaged as a whole.
The profile of a kind of liquid crystal display that Fig. 7 provides for the embodiment of the present invention four.Front light guide plate 702 HeRear light guide plate 703 is bonded together by double-sided reflecting glue 704, and leaves pockets in bottom, is used forAttach luminous component 701；The light conversion that luminous component 701 is sent by front light guide plate 702 and rear light guide plate 703Become area source, and distinguish the first exiting surface and second exiting surface of rear light guide plate 703 of light guide plate 702 in the pastDerive, through the first optical diaphragm group 705 and process of the second optical diaphragm group 706, obtain high brightness andThe area source being evenly distributed, and it is supplied to the first display floater 711 and the second display floater 712；Front glue frame707 and rear glue frame 708 by the first buffering adhesive 709 and the second buffering adhesive 710 by the first display floater 711,Backlight module and the second display floater 712 are packaged as a whole.
In the liquid crystal display that the present embodiment provides, front glue frame and rear glue frame show first by the way of snappingShow that panel, backlight module and the second display floater are packaged as a whole.Compared with prior art, the present embodiment carriesThe liquid crystal display of confession decreases two ferrum backboards, solves double-side display device thickness in prior art thickerProblem, effectively reduces the integral thickness of backlight module, reduces cost.
Note, above are only presently preferred embodiments of the present invention and institute's application technology principle.Those skilled in the artIt will be appreciated that the invention is not restricted to specific embodiment described here, can enter for a person skilled in the artRow various obvious changes, readjust and substitute without departing from protection scope of the present invention.Therefore, thoughSo by above example, the present invention is described in further detail, but the present invention be not limited only toUpper embodiment, without departing from the inventive concept, it is also possible to include other Equivalent embodiments more,And the scope of the present invention is determined by scope of the appended claims.